Akademik Veri Yönetim Sistemi
EcoMAT, İstanbul, Türkiye, 28 Temmuz - 01 Ağustos 2025, ss.113, (Özet Bildiri)
With the intensifying global transition toward electrification and renewable energy integration, lithium-ion batteries (LIBs) have become indispensable components in a wide range of applications, from consumer electronics to electric mobility and grid-scale storage systems 1. This widespread adoption has led to a sharp rise in battery waste, underscoring the urgent need for innovative recycling approaches that are both sustainable and resource-efficient. LIBs are composed of critical raw materials such as lithium, cobalt, nickel, and manganese—elements that are not only finite but also geographically concentrated, making their recovery vital for future supply security 2. In addition, the presence of hazardous compounds within these batteries presents considerable environmental and human health risks if end-of-life management is neglected. Addressing these challenges requires the development of advanced recycling solutions that minimize ecological impact while maximizing material recovery 3.
In the pursuit of more environmentally responsible and efficient recycling methods, deep eutectic solvents (DESs) have emerged as a promising alternative to conventional leaching agents. These innovative solvents are synthesized by combining specific molecular components: typically a hydrogen bond donor and acceptor 4. This allows DESs to remain in the liquid phase under mild thermal conditions. Owing to their favorable characteristics, including low vapor pressure, biodegradability, and customizable solvation behavior, DESs offer a highly effective medium for the selective dissolution and recovery of critical metals from end-of-life LIBs 5.
In this study, malonic acid-based DESs were employed to recover critical metals from cathode materials extracted from real-world, end-of-life LIBs. A series of experimental parameters, including temperature, leaching duration, solid-to-liquid ratio, and the application of ultrasonic assistance, were systematically investigated to optimize the metal recovery process. The results demonstrated that under specific conditions, the DES system facilitated the efficient dissolution of valuable metals into solution, achieving high leaching efficiencies and confirming its potential as a green and effective alternative.